JP4750647B2 - Thermal insulation structure - Google Patents

Description

  The present invention provides a heat insulating structure for performing heat insulation between a supporting structural member and a supported structural member, in particular, between a building portion and an outer portion projecting from the building portion. It comprises a heat insulator disposed between and a reinforcing bar that penetrates the heat insulator and is connected to both structural members, and at least a shear load reinforcing bar is disposed as the reinforcing bar, and these shear loads Reinforcing bars extend substantially diagonally in vertical planes parallel to each other inside the heat insulator, and for connection with both structural members, an upper extending portion extending to the side of the supporting structural member, Bending at the transition region between the lower extension portion extending to the supported structural member side, and these upper extension portion and lower extension portion are separated from the heat insulator at different heights in the vertical plane. Related to connecting parts that protrude horizontally

  This type of insulation structure has been used for a long time and typically has an insulation of 8 cm thickness. This heat insulator is interposed in particular for an outer part such as a balcony protruding from a building part such as a hierarchical ceiling. This 8 cm-thick heat insulator corresponds to the thickness of a conventional outer heat insulating material normally disposed on the wall surface of a building. However, in recent years, the thickness of the outer heat insulating material is becoming thicker as a result of the energy saving regulations, and during this time, the thickness of the heat insulating material in the energy saving house (passive house: Passivhaus) is about 20 cm. It is clear that the known insulation structure with an insulation thickness of only 8 cm does not meet the requirements for energy-saving houses, and as a result, abandoning any part of the outer overhang, in particular the balcony, or the outer overhang area The lack of thermal insulation must be deliberately accepted.

  Starting from the above, the object of the present invention is to provide a thermal insulation structure of the type described in the technical field, which is suitable for installation in an energy-saving house and in which the structural mechanical properties are not impaired under these conditions It is to be. This is because the shear load reinforcement described above achieves optimum properties only when mounted at an angle of about 45 °. If this angle is made flatter to increase the thickness of the insulation, the shear load reinforcement will be correspondingly “soft” and the structural mechanical requirements will no longer be fully met. is there.

In order to solve the above-mentioned problem, a heat insulator (2) disposed between a supporting structural member and a supported structural member, and reinforcing bars (through the heat insulating body (2) and connected to both structural members ( 4, 5, 6), and a heat insulating structure that performs heat insulation between the supporting structural member and the supported structural member, and is disposed at least in vertical planes parallel to each other as the reinforcing bars. A plurality of shear load reinforcing bars (6), the shear load reinforcing bars (6) extending substantially obliquely in the vertical plane inside the heat insulator (2), Transition between an upper extension portion (6a) extending toward the support structural member and a lower extension portion (6c) extending toward the supported structural member for connection to the structural member. The upper extension part (6a) and the lower extension part (6c) are bent in the region, In a portion that is connected to a portion that protrudes horizontally from the heat insulating body (2) at a position having a different height, the heat insulating body (2) is on the side facing the support structure member, and the shear load reinforcing bar ( the heat insulator (2) projecting portion to form a switching Ketsumizo (7) to each of the portions corresponding to the plurality of upper projecting portion projecting (6f) from order to migrate the upper extending portion to (6a) of 6) ( 3), and the protrusion (3) extends to the side of the support structure member and reaches the region of the upper extension portion (6a) as a shear-proof reinforcing bar area protruding horizontally. The bent portion (6d) as a bent shear load reinforcing bar area is surrounded from the side.

  This heat insulating structure is used between a supporting structural member and a supported structural member, in particular, between a building part and an outer part protruding from the building part, and is particularly applied to an energy saving house (passive house). Is intended.

  For the first time by the above configuration, for example, by adding a protrusion that compensates for the thickness that is still insufficient to a heat insulator of a typical thickness of 8 cm to a heat insulator of the usual, a thickness of 15 cm or more required for an energy-saving house, In particular, it is possible to provide a thermal insulator having a thickness of about 20 cm. Each of the protrusions has a notch groove in a region where a portion connected to the upper extension portion of the shear load reinforcing bar protrudes. By this notch groove, the bent portion of the shear load reinforcing bar is embedded in the concrete injected into the same place, and the reinforcing bar is sufficiently reinforced and supported structurally. Thus, the optimum orientation of 45 ° of the shear load reinforcing bar can be maintained inside the heat insulating body without substantially impairing the structural mechanical function of the heat insulating property on the one hand and the shear load reinforcing bar on the other side. it can. In addition, the structural mechanical properties of the tensile load reinforcement and the compression load reinforcement that are surrounded by an insulating material over the entire thickness of 15 cm or more are also substantially deteriorated by the expansion of the longitudinal portion that is not supported by the concrete. Nor.

  Preferably, the protrusion is formed substantially in the shape of a rectangular parallelepiped and is sized to have the same height and the same length as the thermal insulator, and the shear load reinforcement bar protrusion region created by the adjacent protrusion is In the arrangement region of the shear load reinforcing bars, a substantially rectangular horizontal cross section is formed, and a notch groove having a substantially fan-shaped vertical cross section is formed. As a result, the optimum connection between the concrete poured into the notch and the adjacent concrete structural member is ensured, and sufficiently stable anchoring of the shear load reinforcing bar in the concrete is possible.

  If the total thickness of the heat insulator, that is, the thickness of the original heat insulator plus the thickness of the protrusion is about 20 cm, this means that the usual structural member and the heat insulator have the same height. In some cases, the overall result is a vertical cross-section that is at least partially square.

On the other hand, on-site cast concrete of adjacent support structure members can be poured into the protruding region of the upper extension part of the shear load reinforcing bar formed in the protruding part, that is, inside the notch groove of the heat insulating body. . In this case, the thermal insulator functions as a blind frame in the usual way. It is possible to fill the notch groove with concrete having different material characteristics, particularly high strength concrete or high performance concrete. This is preferably done prior to the installation of the insulation structure, in particular left to the construction company of the structural member. The use of high-performance concrete with better thermal insulation compared to normal reinforced concrete compensates for a partial reduction in insulation thickness in the notch groove area, which leads to a corresponding reduction in thermal insulation characteristics.
Hereinafter, other features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the drawings.

  The heat insulating structure 1 shown in FIGS. 1 and 2 includes a heat insulating body 2 having a protrusion 3 integrally formed from the same insulating material, and a plurality of reinforcing bars crossing the heat insulating body 2, that is, an upper heat insulating region. It has a tensile load reinforcement bar 4 that runs in the horizontal direction, a compression load reinforcement bar 5 that runs in the horizontal direction in the lower insulator region, and a shear load reinforcement bar 6. The shear load reinforcing bar 6 includes an obliquely extending portion 6b that extends substantially obliquely in vertical planes parallel to each other inside the heat insulator, and an upper extending portion 6a that extends to the support structure member side. And a lower extending portion 6c extending to the supported structural member side. This shear load reinforcing bar 6 includes an upper extension portion 6a extending to the support structure member and a supported structure member for connecting the support structure member and two adjacent concrete structure members as the support structure member. It is bent at a portion which is a transition region between the lower extending portion 6c extending to the side. The upper extending portion 6a and the lower extending portion 6c are different from the upper bent portion 6d and the lower bent portion 6e having portions protruding horizontally from the heat insulator, respectively, at different positions in the vertical plane. It is connected.

  The protrusion 3 is arranged on the side of the heat insulator 2 facing the support structure member, and has a notch groove 7. This notch groove has a rectangular horizontal cross section and a fan-shaped vertical cross section, and is formed as a concrete injection groove that surrounds the upper protruding portion 6 f of the obliquely extending portion 6 b of the shear load reinforcing bar 6.

  From the plan view of the heat insulating structure 1 shown in FIG. 2, the protruding portion 3 has only a notch groove 7 only in the region of the shear load reinforcing bar 6. For this reason, the solid protrusion 8 on the side adjacent to the notch groove 7 and through which the tensile load reinforcing bar 4 penetrates surrounds the upper bent part 6d as an area where the shear load reinforcing bar is bent. It is understood. Thereby, the heat insulating body 2 is integrated with the protruding portion 3 and has the maximum thickness D. Thus, the heat insulating properties of this heat insulating structure are appropriately improved. On the other hand, the notched groove 7 into which concrete has been poured sufficiently supports the shear load reinforcing bar 6. Thereby, the non-supporting portion of the diagonally extending portion 6b of the shear load reinforcing bar 6 is appropriately reduced, and is approximately equivalent to a conventional heat insulating structure having a heat insulating body having a thickness of 8 cm, for example. In this way, about half of the diagonally extending portion of the shear load reinforcement is surrounded and supported by the concrete inside the notch groove, while the other half of the diagonally extending portion is insulated without auxiliary support. Will penetrate.

  In the present invention, the main part of the diagonally extending portion of the shear load reinforcing bar is surrounded and supported by the concrete, so that the heat insulation characteristics are remarkably improved, and at the same time, the structural mechanical characteristics are not impaired, or almost It offers the advantage of providing an unbroken insulation structure.

  It should be noted that reference numerals are used in the claims to make the comparison with the drawings convenient, but the present invention is not limited to the structure of the attached drawings by the entry.

Side view of thermal insulation structure according to the present invention Plan view of the heat insulation structure according to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal insulation structure 2 Thermal insulation body 3 Protrusion part 6 Shear load resistant reinforcement 6a Upper extension part 6c Lower extension part 6d Bending part 6f Upper protrusion part 7 Notch

Claims (8)

A heat insulator (2) disposed between the supporting structural member and the supported structural member, and reinforcing bars (4, 5, 6) penetrating the heat insulating body (2) and connected to both structural members; A heat insulating structure that performs heat insulation between the supporting structural member and the supported structural member,
As the reinforcing bars, at least a plurality of shear load reinforcing bars (6) disposed in vertical planes parallel to each other,
The shear load reinforcing bar (6) extends substantially obliquely in the vertical plane inside the heat insulating body (2), and is connected to both structural members for the side of the supporting structural member. Bent at the transition region between the upper extended portion (6a) extended to the lower extended portion (6c) extended to the supported structural member side,
The upper extension part (6a) and the lower extension part (6c) are connected to a part projecting horizontally from the heat insulator (2) at different heights in the vertical plane.
The thermal insulator (2) has a plurality of protrusions protruding from the thermal insulator (2) so as to move to the upper extension portion (6a) of the shear load resistant reinforcement (6) on the side facing the support structure member . a projecting portion forming a switching Ketsumizo (7) to each of the portion corresponding to the upper projecting portion (6f) to (3),
The projecting portion (3) extends to the side of the support structure member, reaches the region of the upper extension portion (6a) as a horizontally projecting shear load reinforcing bar area, and is bent in a shear resistant load. A heat insulating structure that surrounds the bent portion (6d) as a reinforcing bar area from the side.   2. The heat insulating structure according to claim 1, wherein the protrusion (3) has a shape in which the notch groove is formed in a rectangular parallelepiped having the same height and the same length as the heat insulating body (2).   The heat insulation structure according to claim 1 or 2, wherein the notch groove (7) has a substantially rectangular horizontal cross section in the arrangement region of the shear load reinforcing bars and a substantially fan-shaped vertical cross section.   Since the heat insulator (2) has a thickness (D) that is integrated with the protrusion (3) and substantially matches the height dimension of the heat insulator (2), the shear load reinforcement bar The heat insulating structure according to any one of claims 1 to 3, wherein a parallel cross section of the vertical surface of (6) is created, at least partly, a substantially square vertical cross section.   The heat insulation structure according to any one of claims 1 to 4, wherein the heat insulator (2) has a total thickness (D) of at least 15 cm integrally with the protrusion (3).   The said notch groove (7) is filled with concrete, Therefore The bending part (6d) as a bending | flexion shearing load reinforcement bar | burr area | region is embed | buried in concrete. Thermal insulation structure.   The heat insulating structure according to claim 6, wherein the concrete is a concrete having better heat insulating properties than the concrete of the adjacent supporting structural member, and is injected into the notch groove (7) before being attached to both the structural members. .   The heat insulating structure according to claim 6, wherein the notch groove (7) provided in the protrusion (3) is filled with concrete of the adjacent support structure member.

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